/**
 * @Author ZhangGJ
 * @Date 2021/01/23 09:16
 */

#include <stdio.h>

int main(void) {
    float commission, value;

    printf("Enter value of trade: ");
    scanf("%f", &value);

    if (value < 2500.00f) {
        commission = 30.00f + .017f * value;
    } else if (value < 6250.00f) {
        commission = 56.00f + .0066f * value;
    } else if (value < 20000.00f) {
        commission = 76.00f + .0034f * value;
    } else if (value < 50000.00f) {
        commission = 100.00f + .0022f * value;
    } else if (value < 500000.00f) {
        commission = 155.00f + .0011f * value;
    } else {
        commission = 255.00f + .0009f * value;
    }

    if (commission < 39.00f) {
        commission = 39.00f;
    }

    printf("commission: $%.2f\n", commission);

    return 0;
}
